I was hesitant to order this because I've never been a fan of polyester- it usually feels hot and stuffy to me. But I needed some white summer shirts for work that wouldn't be too bare, like some tank tops are. This is my first experience with a "performance" or "wicking" fabric- and my expectations were low- but I was pleasantly surprised to find this shirt to be comfortable, cool, and light as a feather. It also fits perfectly, and the armholes are not too large ( a persistent problem with women's sleeveless tops). I definitely recommend this shirt, and I plan to purchase more.